Glencore put the mine, which is also capable of producing large amounts of copper, on care and maintenance in November 2019 citing falling cobalt prices, increased costs, and higher taxes.

On Monday company officials discussed the re-opening of the mine with Congo's mining minister Antoinette N'Samba in Kinshasa, the ministry said in a statement.

Mutanda produced 103,200 tonnes of copper and 25,100 tonnes of cobalt hydroxide in 2019 compared with 199,000 tonnes and 27,300 tonnes respectively in 2018. It has five copper production lines and three cobalt hydroxide lines.

(Reporting by Hereward Holland; Editing by Kenneth Maxwell)

By Hereward Holland